Chromosphere

Prominences / Filaments

prominences

filaments

Prominences are clouds of material suspended above the chromosphere by
magnetic field loops. When seen against the chromosphere, they are visible by
absorption and are called filaments. When seen near the limb, they can be seen
against the sky as emission features. They generally come in two broad classes:
active and quiescent. Quiescent prominences occur away from active regions and
last for many months. Active prominences are associated with sunspots and
flares. They have violent motions, change fast and last for only a few hours.